they believe paul ciancia acted alone, but can't say why he did it. >>> everyone on the floor. on the floor now. >> another look at that chilling exclusive cell phone video from tmz. seconds later as you can see, passengers poured out of the gate areas as police urged them to run outside. some of those passengers were injured trying to escape and get to safety. >> this was all happening at l.a.x., but there's a ripple effect across the world. flight delays and diversions from some of our local airports. we begin with impact at san jose. >> reporter: at least 27 flights between the bay area and l.a.x. have been cancelled. that number is expected to grow. >> i made a big circle. >> reporter: it's been a long day for a richmond resident. >> i started in oakland, was supposed to go to l.a.x., from l.a.x. to austin. ended up in ontario where they told us to get off the plane, go get our luggage, and recheck back in. so i'm back here. >> reporter: five hours of travel time only to end up back in the bay area. she's hoping to finally catch a flight to austin this evening. >> just tire